Waves and Oscillation MCQs

1.Over-damping(gradual reduction of  excessive oscillation) is because of…

A. arrhythmic return to equilibrium

B. faster return to equilibrium

C. equilibrium is never achieved

D. slower return to equilibrium

2. Natural frequency of a guitar string can be changed by changing it’s

A. stiffness

B. area

C. diameter

D. length

 

3. In S.H.M(Simple Harmonic Motion) velocity at equilibrium position is

A. minimum

B. constant

C. zero

D. maximum

4. Maximum displacement from equilibrium position is

A. Frequency

B. Amplitude

C. Wavelength

D. Period

5. Which one of the given cannot receive the4 ultrasonic

A. Dolphin

B. Human Being

C. mouse

D. Rat

6. A spring of force constant K is cut into two pieces such that one piece is double the length of the other. Then the longer piece3 will have a force constant of

A. 3/2K

B. 3K

C. 9K

D. 6K

7.Displacement-time graph depicting(Represent by Drawing) an oscillatory motion is

A. cos curve

B. sine curve

C. tangent curve

D. straight line

8. Maximum displacement(action of moving some thing) from equilibrium position is

A. frequency

B. wavelength

C. period

D. amplitude

9. If time period of an oscillation is 0.40 s what will be it’s frequency is

A. 2 Hz

B. 5 Hz

C. 3 Hz

D. 5 Hz

10. In cars, springs are damped by

A. shock absorbers

B. engine

C. tyres

D. brake pedals

11. Our eyes detect oscillations up to

A. 5 Hz

B. 9 Hz

C. 6 Hz

D. 8 Hz

12. A force that acts to return mass to it’s equilibrium position is called

A. frictional force

B. restoring force

C. normal force

D. contact force